Cyathostemon tenuifolius Plant Care

Cyathostemon tenuifolius (Cyathostemon tenuifolius) belongs to the Myrtaceae family within the Cyathostemon genus. Cyathostemon tenuifolius is native to Western Australia.

Cyathostemon tenuifolius displays a tall, upright tree growth habit, reaching up to 15 ft tall with a spread of approximately 8 ft. Cyathostemon tenuifolius produces small white flowers in clusters.

Leaf size: approximately 4 inches.

Water a young or newly planted Cyathostemon tenuifolius every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Cyathostemon tenuifolius thrives in full sun to partial shade.

Cyathostemon tenuifolius tolerates temperatures of 60–85°F. Cyathostemon tenuifolius prefers humidity levels of 40–70%.

Well-draining sandy loam with added organic matter for moisture retention. Good drainage is essential for Cyathostemon tenuifolius to prevent waterlogging, which leads to root rot and fungal issues.

Feed Cyathostemon tenuifolius every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Choose a spot with full sun to partial shade and well-draining sandy loam with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Cyathostemon tenuifolius is suited to USDA Zone 13a.

Plant container-grown or balled-and-burlapped trees in spring or early autumn, setting the root flare at soil level, and water well after planting.

Cyathostemon tenuifolius can spread to about 8 ft (2.4 m) and reach about 15 ft (5 m) tall. Space plants about 8 ft (2.4 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the tree spacing calculator.

Prune Cyathostemon tenuifolius while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the tree in one year.

Cyathostemon tenuifolius is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Cyathostemon tenuifolius can be propagated through seeds, softwood cuttings. Similar propagation techniques also apply to cyathostemon ambiguus plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Cyathostemon tenuifolius is susceptible to aphids, scale insects, leaf miners. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Cyathostemon tenuifolius grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Cyathostemon tenuifolius is native to Western Australia. In cooler regions, grow Cyathostemon tenuifolius as a houseplant or bring it indoors before the first frost.